Just can write lower case sessions. Read session name always to lower case

src/app/game/game.component.ts

@@ -53,7 +53,7 @@ export class GameComponent implements OnInit {
 
   ngOnInit(): void {
     this.activatedRoute.paramMap.subscribe(params => {
-      this.sessionName = String(params.get('sessionName'));
+      this.sessionName = String(params.get('sessionName')).toLowerCase();
       this.team = String(params.get('team'));
       const url = this.router.url.split('/');
       const checkUser = url[url.length - 1];

src/app/guesser/guesser.component.ts

@@ -35,7 +35,7 @@ export class GuesserComponent implements OnInit {
 
   ngOnInit(): void {
     this.activatedRoute.paramMap.subscribe(params => {
-      this.sessionName = String(params.get('sessionName'));
+      this.sessionName = String(params.get('sessionName')).toLowerCase();
       this.team = String(params.get('team'));
       if (!this.isAllowedToPlay.isAllowed || this.isAllowedToPlay.role !== 'guesser') {
         this.router.navigate([this.sessionName + '/' + this.team]);

src/app/overview/overview.component.ts

@@ -39,7 +39,7 @@ export class OverviewComponent implements OnInit {
 
   ngOnInit(): void {
     this.activatedRoute.paramMap.subscribe(params => {
-      this.sessionName = String(params.get('sessionName'));
+      this.sessionName = String(params.get('sessionName')).toLowerCase();
       this.team = String(params.get('team'));
       console.log('Team:', this.team);
       if (this.team === 'red'){

src/app/select-game/select-game.component.ts

@@ -41,7 +41,7 @@ export class SelectGameComponent implements OnInit {
   }
 
   keyPressAlphaNumeric(event: KeyboardEvent): boolean {
-    if (/[a-zA-Z0-9]/.test(event.key)) {
+    if (/[a-z0-9]/.test(event.key)) {
       return true;
     } else {
       event.preventDefault();